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design and Evaluation of a Steering Wheel-mount Speech Interface for Drivers' Mobile Use in Car

Design and Evaluation of a Steering Wheel-mount Speech Inter...

17th International IEEE Conference on Intelligent Transportation Systems & The Asia-Pacific Council on Systems engineering Conference 2014

作者： Ying Wang Shengfan He Zuerhumuer Mohedan Yueyan Zhu Lijun Jiang Zhelin Li Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control the School of Transportation Science & EngineeringBeihang University School of Design South China University of Technology

Advanced mobile devices with speech recognition interface offered driver assistance in many ***,current interaction mode between drivers and the speech interface on mobile devices still generates obvious manual and visual distractions while *** paper proposed and prototyped a driver-friendly interface including a Bluetooth module mounted on the steering wheel and a head-up display(HUD) unit on the *** allows drivers to remotely activate the speech interaction mode of mobile devices without taking their hands off the steering wheel,and read the visual display of mobile devices without looking away from the *** of the new interface was conducted through a driving simulator *** showed that the interface designed in this study had reduced driver distraction and increased usability.

关键词： PDT design and Evaluation of a Steering Wheel-mount Speech Interface for Drivers HUD Mobile Use in Car

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An effective sub-domain smoothed Galerkin method for free and forced vibration analysis

An effective sub-domain smoothed Galerkin method for free an...

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2014年中国计算力学大会

作者： Yigang Wang Dean Hu Gang Yang Xu Han Y.T.Gu State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyGPO Box 2

Free and forced vibration analysis is significant in structural mechanics and engineering.A sub-domain smoothed Galerkin method is developed for free and forced vibration analyses of 2D *** method integrates the advantages of mesh-free Galerkin method and Finite Element Method (FEM).The arbitrarily shaped sub-domains are predefined in the problems domain represented by mesh- free *** each sub-domain,based on mesh- free Galerkin weak formulation,the local discrete equation can be obtained by using Moving Kriging (MK) interpolation,which is similar to the discrete equation of a high-order element in *** strain smoothing technique can be subsequently applied to the nodal integration of sub-domain by dividing the sub-domain into several smoothing ***,condensation of degrees of freedom (DOF) can also be introduced into discrete equations by transfer equations of inner nodes to equations of boundary nodes based on *** global dynamic equations of the present method are obtained based on the scheme of FEM by assembling all local discrete equations of sub-domains and are solved by using the standard implicit Newmark's time integration *** examples proved that the sub-domain smoothed Galerkin method is a robust technique to simulation the elastic dynamic problems,which has high computational efficiency and good accuracy.

关键词： mesh-free Galerkin method FEM MK interpolation strain smoothing technique condensation of DOF

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Disturbance observer based heave compensation control for benthic coring drill

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Open Mechanical engineering Journal 2013年第1期7卷 129-135页

作者： Guo, Y. Jing, Y.P. Jiang, M. Luo, B.W. Engineering Research Centre of Advanced Mining Equipment Ministry of Education Hunan University of Science and Technology HuNan Xiangtan 411201 China Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle Education Department of Hunan Province Changsha University of Science and Technology HuNan Changsha 410004 China

Severe environment in deep ocean affects operating reliability and security of coring drill. Adopting heave motion signal measured by accelerometer to confirm heave compensation of coring drill, the compensation control method is proposed using disturbance observer to restrain the disturbance. Then, the disturbance observer is designed. The heave motion simulation for coring drill is done with this control method, and the results show that the heave motion compensation control of coring drill using disturbance observer avoids the disturbance with high tracking quality, and provides high reliability and security to coring drill operating. © Guo et al.

关键词： Drills

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Dynamics simulation and optimization of ride comfort for car on random road

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Journal of Applied Sciences 2013年第15期13卷 3035-3041页

作者： Hu, Lin Huang, Jing School of Automotive and Mechanical Engineering Changsha University of Science and Technology Changsha Hunan 410004 China State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Changsha Hunan 410082 China

To ensure the safety, high efficiency and comfort of traffic and transportation, the research of automotive ride comfort is getting more and more important. vehicle ride comfort is one of the most important performances of vehicle. At first, the subsystems dynamics analysis models were separately established, such as front suspension, rear suspension, person-chair system, steer system, tire and transmission subsystems in this paper, then these subsystems assembled an vehicle dynamics analysis model with the car body and frame by used the software-ADAMS. Where after validated the correctness of the model by the experiment results of sample vehicle. Secondly, the vehicle ride comfort on random road was analyzed by the weighting acceleration root-mean-square value. Finally, the paper had studied influence of the spring stiffness, the shock absorber damping and the tire stiffness on vehicle ride comfort, based on simulation and analysis, The study proposed the optimization plan. © 2013 Asian Network for Scientific Information.

关键词： Shock absorbers

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Feature-preserving quad dominant remeshing in engineering

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Journal of Information and Computational Science 2013年第1期10卷 27-34页

作者： Liu, Mingzeng Li, Baojun Zheng, Guojun Hu, Ping Jin, Chunning School of Automotive Engineering Faculty of Vehicle Engineering and Mechanics Dalian University of Technology Dalian 116024 China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Changsha 410082 China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian 116024 China

Quadrilateral mesh in general has better quality and converges faster than the triangular one in the Finite Element Method (FEM) analysis. In this paper we focus on remeshing complex triangluar meshes with boundaries and propose a method for converting a given FEM mesh model into a quad dominant one which is based on one-step inverse forming method. The proposed algorithm preserves the features, such as holes, curve constraints, in the original models. In particular, an offsetting technique is employed to handle the elements in the vicinity of features and boundaries, the configuration of which the accuracy of most simulation is much more sensitive to. The results indicate the effectiveness and quality of the proposed approach. © 2013 by Binary Information Press.

关键词： Finite element method

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Recovery of hierarchical styling features from images

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Journal of Information and Computational Science 2013年第7期10卷 1907-1916页

作者： Li, Baojun Li, Qingbao Liu, Chong Liu, Mingzeng Hu, Ping Liu, Xiuping School of Automotive Engineering Faculty of Vehicle Engineering and Mechanics Dalian University of Technology Dalian 116024 China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Changsha 410082 China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian 116024 China School of Mathematical Science Dalian University of Technology Dalian 116024 China

In this paper, we propose a model-based reconstruction method for recovering a 2D parametric styling model with hierarchical structure from an image. Our method extracts characteristic features for industrial design with following essential components: construction of the template database as prior knowledge, contour detection from images and layered segmentation, key points generation via shape correspondence with reference model, sparse reconstruction based on shape space and hierarchical fitting. The whole recovery process is semi-automatic. We adopt the challenging vehicle styling as test examples, and establish associated styling model database. Numerical experiments show that our method is effective to recover the styling features with high precision and hierarchical structure. We also give an image reshaping application based on our hierarchical features. © 2013 by Binary Information Press.

关键词： Recovery

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Sensitivity analysis for quantified interval constraints

Sensitivity analysis for quantified interval constraints

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11th International Conference on Structural safety and reliability, ICOSSAR 2013

作者： Hu, J. Wang, Y. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Changsha Hunan China Georgia Institute of Technology GeorgeW.Woodruff School of Mechanical Engineering Atlanta GA United States

ISBN: (纸本)9781138000865

Interval is an alternative to probability distribution in quantifying uncertainty for reliability analysis when the distribution is unavailable. It only requires the information of lower and upper bounds. The effect of uncertain parameters can be estimated by solving interval-valued Constraint Satisfaction Problems (CSPs). By introducing logic quantifiers, Quantified Constraint Satisfaction Problems (QCSPs) can capture more semantics and engineering intent than CSPs. Sensitivity analysis (SA) takes into account variations of the structure and parameters of interval constraints to study to which extent they affect the output. In this paper, a global SA method is developed for QCSPs, where the effects of quantifiers and interval ranges on the constraints are analyzed based on several proposed metrics, which indicate the levels of indeterminacy for inputs and outputs as well as unsatisfiability of constraints. engineering design problems are used to demonstrate the proposed approach. © 2013 Taylor & Francis Group, London.

关键词： Sensitivity analysis

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Optimization of deflector layout parameters in wind tunnel based on flow field quality

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Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and technology) 2013年第4期44卷 1390-1396页

作者： Hu, Pengjun Gu, Zhengqi Bao, Huanhuan Zhang, Qinglin State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Changsha 410082 China College of Mechanical Engineering Hunan University of Technology Zhuzhou 412008 China

The flow quality of test section under the initial layout parameters of deflector which is in the wind tunnel applications corner was analyzed by computational fluid dynamics(CFD), and the deflector's quantity and installation angle in the wind tunnel applications corner were optimized under the condition of keeping a constant chord length as 1917.1 mm by multi-island genetic algorithm Isight, which revealed the best layout parameters of deflector quantity as 27 and installation angle as 47°. Moreover, the optimal target of be the root mean square average of velocity deviation which is up to 0.07845%, and the error is just 1.5% compared to the CFD value which is 0.07970%. Compared with the deflector with initial layout parameters, it improves the quality of the flow field in test section to certain extent.

关键词： Wind tunnels

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AN ANALYTIC STUDY FOR A ROTATING FGPM HOLLOW CYLINDER

AN ANALYTIC STUDY FOR A ROTATING FGPM HOLLOW CYLINDER

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2013全国压电和声波理论及器件技术研讨会

作者： Hong-Liang DAI Wei-Feng LUO Hai-Bo LIU State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Key Laboratory of Manufacture and Test Techniques for Automobile Parts Ministry of EducationChongqing University of Technology College of Mechanical & Vehicle Engineering Hunan University

An analytic solution to the axisymmetric problem of a long,radially polarized,functionally graded piezoelectric material(FGPM)hollow cylinder rotating about its axis at a constant angular velocity is *** the case that electric,thermal and mechanical properties of the material obey different power laws in the thickness direction,distributions for radial displacement,stresses and electric potential in the FGPM hollow cylinder are determined by using the theory of *** useful discussions and numerical examples are presented to show the significant influence of material nonhomogeneity,and adopting suitable graded indexes and applying suitable geometric size and rotating velocity at may optimize the rotating FGPM hollow cylindrical structures.

关键词： FGPM hollow cylinder Rotating Electrothermoelastic

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Comparison and analysis of engine exhaust gas energy recovery potential through various bottom cycles

Comparison and analysis of engine exhaust gas energy recover...

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作者： Liu, J.P. Fu, J.Q. Ren, C.Q. Wang, L.J. Xu, Z.X. Deng, B.L. Research Center for Advanced Powertrain Technology Hunan University 410082 Changsha China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University 410082 Changsha China College of Engineering and Computer Science University of Michigan-Dearborn Dearborn 48128 MI United States College of Mechanical and Material Engineering Three Gorges University 443002 Yichang China

In this paper, aimed to recover engine exhaust gas energy and improve engine thermal efficiency, various means of bottom cycles for engine exhaust gas energy recovery are proposed, and those include direct recovery means through exhaust gas expansion, such as secondary expansion, and indirect recovery means through heat transfer, such as Rankine steam cycle, Brayton air cycle, etc. The performances and characteristics of each bottom cycle are studied by cycle processes calculation and then the energy recovery potentials are compared. The results show that direct recovery bottom cycle through secondary expansion demonstrates little, if any, positive potential for a gasoline engine, and it only suits to diesel engine at full load with high boost pressure. The improvement range also differs with engine speeds and energy recovery potential is low. However, indirect recovery bottom cycles have larger applied range and higher exhaust gas energy recovery potential compared to direct recovery means. In all indirect recovery bottom cycles discussed, the maximum energy recovery potentials reduce in the sequence of over-heated Rankine steam cycle, standard Rankine steam cycle, Brayton air cycle with regeneration and standard Brayton air cycle. © 2012 Elsevier Ltd. All rights reserved.

关键词： Recovery

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